diff --git a/cpdfimpose.ml b/cpdfimpose.ml
index 742f5af..9577dd2 100644
--- a/cpdfimpose.ml
+++ b/cpdfimpose.ml
@@ -146,7 +146,7 @@ let impose_pages fit x y columns rtl btt center margin output_mediabox fast fit_
           in
             flatten
               (map2
-                (fun p t -> Cpdfutil.transform_annotations pdf t p.Pdfpage.rest; transform_stream t p.Pdfpage.content)
+                (fun p t -> Pdfannot.transform_annotations pdf t p.Pdfpage.rest; transform_stream t p.Pdfpage.content)
                 pages
                 transforms)
        in
diff --git a/cpdfpage.ml b/cpdfpage.ml
index 18f7199..6a2d136 100644
--- a/cpdfpage.ml
+++ b/cpdfpage.ml
@@ -91,7 +91,7 @@ let shift_page ?(fast=false) dxdylist pdf pnum page =
       (*let page =
         Cpdfutil.change_pattern_matrices_page pdf (Pdftransform.mktranslate ~-.dx ~-.dy) page
       in*)
-        Cpdfutil.transform_annotations pdf (Pdftransform.mktranslate dx dy) page.Pdfpage.rest;
+        Pdfannot.transform_annotations pdf (Pdftransform.mktranslate dx dy) page.Pdfpage.rest;
         (Pdfpage.prepend_operators pdf [transform_op] ~fast page, pnum, Pdftransform.mktranslate dx dy)
 
 let shift_pdf ?(fast=false) dxdylist pdf range =
@@ -163,7 +163,7 @@ let scale_page_contents ?(fast=false) scale position pdf pnum page =
       in
         let transform_op = Pdfops.Op_cm transform in
           (*let page = Cpdfutil.change_pattern_matrices_page pdf transform page in*)
-          Cpdfutil.transform_annotations pdf transform page.Pdfpage.rest;
+          Pdfannot.transform_annotations pdf transform page.Pdfpage.rest;
           (Pdfpage.prepend_operators pdf [transform_op] ~fast page, pnum, transform)
 
 let scale_contents ?(fast=false) position scale pdf range =
@@ -260,7 +260,7 @@ let transform_boxes tr pdf page =
 let transform_contents ?(fast=false) tr pdf page =
   let transform_op = Pdfops.Op_cm tr in
     (*let page = Cpdfutil.change_pattern_matrices_page pdf (Pdftransform.matrix_invert tr) page in*)
-      Cpdfutil.transform_annotations pdf tr page.Pdfpage.rest;
+      Pdfannot.transform_annotations pdf tr page.Pdfpage.rest;
       Pdfpage.prepend_operators pdf [transform_op] ~fast page
 
 (* Change a page's media box so its minimum x and y are 0, making other
@@ -321,7 +321,7 @@ let rotate_page_contents ~fast rotpoint r pdf pnum page =
     in    
       let transform_op = Pdfops.Op_cm tr in
       (*let page = Cpdfutil.change_pattern_matrices_page pdf tr2 page in*)
-        Cpdfutil.transform_annotations pdf tr page.Pdfpage.rest;
+        Pdfannot.transform_annotations pdf tr page.Pdfpage.rest;
         (Pdfpage.prepend_operators pdf [transform_op] ~fast page, pnum, tr)
 
 let rotate_contents ?(fast=false) r pdf range =
@@ -341,7 +341,7 @@ let scale_pdf ?(fast=false) sxsylist pdf range =
           (*and page =
             Cpdfutil.change_pattern_matrices_page pdf (Pdftransform.matrix_invert matrix) page*)
           in
-           Cpdfutil.transform_annotations pdf matrix page.Pdfpage.rest;
+           Pdfannot.transform_annotations pdf matrix page.Pdfpage.rest;
            (Pdfpage.prepend_operators pdf ~fast [transform_op] page, pnum, matrix)
       in
         process_pages scale_page pdf range
@@ -382,7 +382,7 @@ let scale_to_fit_pdf ?(fast=false) position input_scale xylist op pdf range =
           (function (minx, miny, maxx, maxy) -> 0., 0., x, y)
           pdf page
       in
-        Cpdfutil.transform_annotations pdf matrix page.Pdfpage.rest;
+        Pdfannot.transform_annotations pdf matrix page.Pdfpage.rest;
         (Pdfpage.prepend_operators pdf [Pdfops.Op_cm matrix] ~fast
          ((*Cpdfutil.change_pattern_matrices_page pdf (Pdftransform.matrix_invert matrix)*) page), pnum, matrix)
   in
@@ -423,7 +423,7 @@ let flip_page ?(fast=false) transform_op pdf pnum page =
   in
     let tr = transform_op minx miny maxx maxy in
       (*let page = Cpdfutil.change_pattern_matrices_page pdf tr page in*)
-        Cpdfutil.transform_annotations pdf tr page.Pdfpage.rest;
+        Pdfannot.transform_annotations pdf tr page.Pdfpage.rest;
         (Pdfpage.prepend_operators pdf [Pdfops.Op_cm tr] ~fast page, pnum, tr)
 
 let vflip_pdf ?(fast=false) pdf range =
@@ -513,7 +513,7 @@ let do_stamp relative_to_cropbox fast position topline midline scale_to_fit isov
                           (if relative_to_cropbox then [Pdftransform.Translate (txmin, tymin)] else []) @
                           [Pdftransform.Scale ((sxmin, symin), scale, scale)]))
                   in
-                    Cpdfutil.transform_annotations pdf matrix o.Pdfpage.rest;
+                    Pdfannot.transform_annotations pdf matrix o.Pdfpage.rest;
                     let r = Pdfpage.prepend_operators pdf [Pdfops.Op_cm matrix] ~fast o in
                       (*Cpdfutil.change_pattern_matrices_page pdf matrix*) r
       else
@@ -525,7 +525,7 @@ let do_stamp relative_to_cropbox fast position topline midline scale_to_fit isov
                 ((if relative_to_cropbox then [Pdftransform.Translate (txmin, tymin)] else []) @
                 [Pdftransform.Translate (dx, dy)]))
             in
-              Cpdfutil.transform_annotations pdf matrix o.Pdfpage.rest;
+              Pdfannot.transform_annotations pdf matrix o.Pdfpage.rest;
               let r = Pdfpage.prepend_operators pdf [Pdfops.Op_cm matrix] ~fast o in
                 (*Cpdfutil.change_pattern_matrices_page pdf matrix*) r
     in
diff --git a/cpdfutil.ml b/cpdfutil.ml
index 32db68f..8b9cd23 100644
--- a/cpdfutil.ml
+++ b/cpdfutil.ml
@@ -134,81 +134,3 @@ let combine_pdf_resources pdf a b =
             (fun dict (k, v) -> Pdf.add_dict_entry dict k v)
             (Pdf.Dictionary [])
             (unknown_keys_a @ unknown_keys_b @ combined_known_entries)
-
-let transform_rect pdf transform rect =
-  let minx, miny, maxx, maxy = Pdf.parse_rectangle pdf rect in
-    let (x0, y0) = Pdftransform.transform_matrix transform (minx, miny) in
-    let (x1, y1) = Pdftransform.transform_matrix transform (maxx, maxy) in
-    let (x2, y2) = Pdftransform.transform_matrix transform (minx, maxy) in
-    let (x3, y3) = Pdftransform.transform_matrix transform (maxx, miny) in
-      let minx = fmin (fmin x0 x1) (fmin x2 x3) in
-      let miny = fmin (fmin y0 y1) (fmin y2 y3) in
-      let maxx = fmax (fmax x0 x1) (fmax x2 x3) in
-      let maxy = fmax (fmax y0 y1) (fmax y2 y3) in
-        Pdf.Array [Pdf.Real minx; Pdf.Real miny; Pdf.Real maxx; Pdf.Real maxy]
-
-let transform_quadpoint_single pdf transform = function
-  | [x1; y1; x2; y2; x3; y3; x4; y4] ->
-      let x1, y1, x2, y2, x3, y3, x4, y4 =
-        Pdf.getnum pdf x1, Pdf.getnum pdf y1,
-        Pdf.getnum pdf x2, Pdf.getnum pdf y2,
-        Pdf.getnum pdf x3, Pdf.getnum pdf y3,
-        Pdf.getnum pdf x4, Pdf.getnum pdf y4
-      in
-        let (x1, y1) = Pdftransform.transform_matrix transform (x1, y1) in
-        let (x2, y2) = Pdftransform.transform_matrix transform (x2, y2) in
-        let (x3, y3) = Pdftransform.transform_matrix transform (x3, y3) in
-        let (x4, y4) = Pdftransform.transform_matrix transform (x4, y4) in
-          map (fun x -> Pdf.Real x) [x1; y1; x2; y2; x3; y3; x4; y4]
-  | qp ->
-     Printf.eprintf "Malformed /QuadPoints format: must be a multiple of 8 entries\n";
-     qp
-
-let transform_quadpoints pdf transform = function
-| Pdf.Array qps ->
-    Pdf.Array (flatten (map (transform_quadpoint_single pdf transform) (splitinto 8 qps)))
-| qp ->
-    Printf.eprintf "Unknown or malformed /QuadPoints format %s\n" (Pdfwrite.string_of_pdf qp);
-    qp
-
-(* Apply transformations to any annotations in /Annots (i.e their /Rect and
-/QuadPoints entries). Also as a best-effort service, altering other
-coordinates, like the endpoints /L in a line annotation. *)
-let transform_annotations pdf transform rest =
-  match Pdf.lookup_direct pdf "/Annots" rest with
-  | Some (Pdf.Array annots) ->
-      (* Always indirect references, so alter in place *)
-      iter
-        (function
-         | Pdf.Indirect i ->
-             let annot = Pdf.lookup_obj pdf i in
-             let rect' =
-               match Pdf.lookup_direct pdf "/Rect" annot with
-               | Some rect -> transform_rect pdf transform rect
-               | None -> raise (Pdf.PDFError "transform_annotations: no rect")
-               in
-             let quadpoints' =
-               match Pdf.lookup_direct pdf "/QuadPoints" annot with
-               | Some qp -> Some (transform_quadpoints pdf transform qp)
-               | None -> None
-               in
-             let line' =
-               match Pdf.lookup_direct pdf "/L" annot with
-               | Some rect -> Some (transform_rect pdf transform rect)
-               | _ -> None
-             in
-             let annot = Pdf.add_dict_entry annot "/Rect" rect' in
-             let annot =
-               match quadpoints' with
-               | Some qp -> Pdf.add_dict_entry annot "/QuadPoints" qp 
-               | None -> annot
-             in
-             let annot =
-               match line' with
-               | Some l -> Pdf.add_dict_entry annot "/L" l
-               | None -> annot
-             in
-               Pdf.addobj_given_num pdf (i, annot)
-         | _ -> Printf.eprintf "transform_annotations: not indirect\n%!")
-        annots
-   | _ -> ()
diff --git a/cpdfutil.mli b/cpdfutil.mli
index c5065fd..7732bf2 100644
--- a/cpdfutil.mli
+++ b/cpdfutil.mli
@@ -8,6 +8,4 @@ val process_xobjects : Pdf.t ->
 
 val combine_pdf_resources : Pdf.t -> Pdf.pdfobject -> Pdf.pdfobject -> Pdf.pdfobject
 
-val transform_annotations : Pdf.t -> Pdftransform.transform_matrix -> Pdf.pdfobject -> unit
-
 val ppstub : ('a -> 'b -> 'c) -> 'a -> 'b -> 'c * 'a * Pdftransform.transform_matrix